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Comparisons between Bio-Oss(®) and Straumann(®) Bone Ceramic in immediate and staged implant placement in dogs mandible bone defects.
- Source :
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Clinical oral implants research [Clin Oral Implants Res] 2013 Feb; Vol. 24 (2), pp. 135-42. Date of Electronic Publication: 2011 Dec 15. - Publication Year :
- 2013
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Abstract
- Objective: To compare immediate and staged approach implant placement in circumferential defects treated with deproteinized bovine bone mineral (DBBM); hidroxyapatite/tricalcium phosphate (HA/TP); autogenous bone (Ab); and coagulum (Cg); upon implant stability, osseointegration and alveolar crest maintenance.<br />Materials and Methods: Six dogs underwent extractions of lower premolars, bilaterally. Twelve weeks later four bone defects (6 mm wide/4 mm long) were drilled at one side and randomly filled with DBBM; HA/TP; Ab; and Cg, respectively, and left to heal (staged approach). Eight weeks later one implant (Osseospeed(™) , AstraTech) was placed in experimental sites. At the same session four defects were drilled on contra-lateral side and implants were inserted immediately after biomaterials grafting (immediate approach). Animals were euthanized 8 weeks later. Implant stability was measured by resonance frequency analysis (RFA) at installation and after sacrifice. Ground sections were prepared for bone contact (BIC); bone area (BA); distance implant shoulder-bone crest (IS-C); distance implant shoulder first bone contact (IS-B); and areas occupied by soft tissue.<br />Results: The BA and BIC were superior in the staged approach. The Cg exhibited higher BIC and BA as compared with other materials at the total implant body (P = 0.004 and 0.012, respectively). The DBBM, HA/TP and Ab groups rendered similar BA and BIC. The immediate approach resulted in less crest resorption compared to staged approach. The biomaterials did not affect the IS-C and IS-B measurements. Particles area tended to be higher in DBBM group than HA/TP (P = 0.15), while soft tissue infiltrate was higher in DBBM group when used in the immediate approach (P = 0.04). The RFA indicated gain in stability in the staged approach (P = 0.002). The correlation test between RFA vs. BIC and BA demonstrated inferior stability for DBBM group in immediate approach (P = 0.01).<br />Conclusions: Implants placed in healed defects resulted in better stability as a consequence of higher BIC and BA. The Cg alone rendered increased BIC compared to other materials in both approaches. Immediate approach should be preferable to staged approach in terms of alveolar crest maintenance. The BIC and BA values did not vary between micro and macro-threads in this experimental model. Implants installed in sites filled with DBBM in immediate approach were less stable.<br /> (© 2011 John Wiley & Sons A/S.)
- Subjects :
- Alveolar Bone Loss prevention & control
Animals
Bone Transplantation methods
Dogs
Immediate Dental Implant Loading
Male
Wound Healing
Bone Substitutes pharmacology
Dental Enamel Proteins pharmacology
Dental Implantation, Endosseous methods
Dental Implants
Hydroxyapatites pharmacology
Mandible surgery
Minerals pharmacology
Osseointegration
Subjects
Details
- Language :
- English
- ISSN :
- 1600-0501
- Volume :
- 24
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Clinical oral implants research
- Publication Type :
- Academic Journal
- Accession number :
- 22168758
- Full Text :
- https://doi.org/10.1111/j.1600-0501.2011.02385.x